Features: There are 2 types, one with wifi function, another without, selecting based on your needs. With heating & cooling mode, Max/Min temperature alarm fucntion. Scan the Qr code to download the app, compatible with Android & IOS. All the operation data can be recorded in backstage. Widely use -- seedling heat mat, home brewing, aquarium, pet breeding, incubation, BBQ, fermentation, accelerating germination, electric radiator, electric oven, etc. Package Includes: 1x Temperature Controller 1x Probe Specifications: Material: ABS+Metal Size: 79x43x27mm/3.1x1.69x1.06in Type: with/without wifi function note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.